Machine for wrapping tablets.



M. CHAMBON.

MACHINE FOR WRAPPING TABLETS. APPLICATION FILED APR. 27, 1915.

1 209 669, Patented Dec. 26 1916.

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MACHINE FOR WRAPPING TABLETS.

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MAQWNE FOR WRAPPING TABLETS.

APPLICATION FILED APR. 27.1915.

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APPLICATION FILED APR. 27, 1915.

MACHINE FOR WRAPPING TABLETS.

Specification of Letters Patent.

Patented nee, as, rare.

Application filed April 27, 1915. Serial No. 24,370.

have invented new and useful Improvements in Machines for Wrapping Tablets,

of which the following is a specification.

This. invention has for its object a machine for wrapping tablets of chocolate or other rigid objects of all kinds, the said machine comprising as essential characteristic elements a distributin mechanism with alternating motion serving to introduce the unwrapped tablets into a transporting receptacle with intermittent motion, which presents them successively to the mechanisms devised for covering them with the internal. wrapper and'then with the external wrapperwith which they are all provided, the said distributing mechanism, moreover, delivering during its return'motion the tablets completely covered with their wrappers on to a traveling track which carries them to the place destined to receive them. The mechanisms devised to cover such tablets with their appropriate covers are, of course, combined with suitable and already known mechanisms for distributing and cutting sheets of paraffin'paper or the like, and of tin foil forming the internal envelop, and which also effect the distributing, cementing and cutting after the folds have been made in the sheet of paper which forms the outer envelop.

In order. to render clear the description of the machine in question, the same has been shown by way of example in the ac-' companying drawings as follows:

Figure 1 is a diagram of the combination of parts forming the new machine. Fig. 2 is a side elevation of the mechanisms devised to supply the uncovered tablets into the transporting mechanism which carries them one after another to the apparatuses for folding the wrappers and delivers the wrapped tablets upon the traveling track which carries them to I the outside of the machine, and Fig. 3 is a detailed view in side elevation of the aforesaid traveling track. Fig. 4 is an elevation and. partial section of the transporting mechanism above set forth, and Fig. 5 is a plan view partially broken off, of the same mechanism. Fig. 6

.is an elevation of the apparatus for the operating of the pliers which fold down the large sides (lateral sides) of the wrappers. Fig. 7 is an elevation of the mechanism controlling the pliers which fold down the small sides or ends of the wrappers. Figs. 8, 9, 10, 11 and 12, are five diagrams showing the successive positions of the folding of the large sides of the wrappers. Figs. 13, 14 and 15 are three diagramsshowing the successive positions of the folding of the ends of the wrappers. Figs. 16 and 17 are two views showing, together'with Fig. 7, the three principal positions taken up by the pliers aforesaid. Fig. 18 is a detailed view showing the form of the pliers.

The same numerals of reference indicate the same elements in the various figures of the drawings.

Referring to the diagram of Fig. 1, it will be seen the machine possesses a main driving shaft A driven by means of a pulley or some suitable connection from a countershaft A: actuated by a pulley 'P, to which motion is imparted in any suitable manner.

B indicates the frame supporting the variousparts of the machine; these parts are as follows: A receiving and transporting mechanism C placed at the center of the machine and possessing an intermittent rotary motion in the direction indicated by the arrow m, the size'of each of these mo tions being 90 degrees. There is further a distributing mechanism D possessing an alternate motion of longitudinal movement combined with a rising and falling motion, this mechanism being devised to introduce the unwrapped tablets into the machine C causing them to travel in the direction indicated by the arrow a. The mechanism C is moreover, combined with two arrangements of apparatus in themselves already known, which occupy positions indicated by rectangles E and F, and which are devised respectively to distribute and to cut the sheets of parafiin paper or the like and of gum, and cut, after marking the folds, the pieces of paper which are destlned afterward to be folded by means of the special mechanism shown at H so as to form the external wrapper. The mechanism 0 is, moreover, combined with a rotating track R, upon which the tablets completely wrapped in their wrappings are carried forward and removed from the machine C by the machine D, the said traveling track carrying these tablets in the direction in- I 'dicated by the arrow 8 toward the machine devised to receive them. The actuation of these various mechanisms is from the common shaft A above mentioned, thus, for instance, the shafts I and J of the two pulley apparatus G and H for folding the wrappers are actuated by means of suitable transmission members indicated diagrammatie cally 'at K and L, and the shaft M on the receiving and transporting mechanism G is driven by means of a suitable transmission member indicated diagrammatically at N.

The mechanism D which serves for the distribution of the unwrapped tablets and for their introduction into'the receiving and transporting mechanism C is constructed as follows (see Fig. 2): It comprises a long table 1 having approximately the width of the tablets which are to be wrapped, and provided with a longitudinal rim 2. This table is mounted upon the frame 3, 4, which possesses an alternating motion in the direction of its axis combined with a vertically rising and falling motion. The first 'motion is obtained by means of a system of jointed rods 5, 6, 7 actuated by an angle lever 8, 9 which pivots on "an axle 10 controlled by a cam 11 mounted upon a shaft 12, and cooperating with a roller 13, carried by the arm of the elbow lever. The rod 5 is jointed at 14 upon the lower part 4 of the aforesaid frame and the rod 6'is jointed at 15 upon a fixed axle carried by the frame of the machine. The shaft 12 obtains it motion from the common shaft A by means of suitable transmitting gear such as 16, 17, 18, for example.

The vertically rising and falling motion already mentioned is obtained by means of the two levers 19, 20 connected together by means of the jointed rod 21 and having at instance.

the one in full lines corresponding to the position at the extreme left and the lowest position of the table 1, the other indicated in dot-and-dash lines corresponding to the extreme right position and the highest one of this same table. The magnitude 1) of the longitudinal displacement of the said table corresponds to the length of a single tablet while the vertical motion is designed to sethat it can be set only from the right to the left, This finger has for its purpose to bring upon the moving track It during the return motion of the table 1, the tablet S,

which is then completely inclosed in its wrappers. The articulation of the finger at 29 permits of its passing over the tablet S without damaging it. The arrangement of the traveling track is moreover shown in Fig. 3, comprising an endless band B traveling over two drums 29, 30, the one the driving drum, the other the return drum. The continuous rotation of the driving drum 30 is imparted to it from the general driving shaft A by means of a suitable transmission mechanism such as 31, 32, 33 and 34, for instance.

The receiving and transporting mechanism indicated at C in the diagram of Fig. 1 is constructed in the following manner (see Figs. 4 and 5). This mechanism comprises a fixed vertical central axle 35,, around which there can revolve freely a horizontal plate 36, the lower part of which is cut out so as to form, a Maltese cross, with which there 00- operates in the well known manner a roller mounted at the end of a lever 37 keyed upon: a vertical shaft 38 which possesses a continuous rotary motion communicated from the general driving shaft A by means of a suitable transmission gear such as 39, 40, for The shaft 35 also possesses two cylindrical concentric sleeves 41, 42 which can turn freely around the said shaft under the action of the levers with rollers 43, 44 cooperating respectively with corresponding cams 45, 46 mounted on the,sha ft"38a;aboyementioned. These sleeves 41,""42- possess,

moreover, two cylinders 47, 48 open vat opposite'ends, and having their outer surfaces provided with projections so as to form closed cam surfaces, with which surfaces there coeperate respectively the rollers 49,-

50 mounted at the ends of the rods 51, 52

which can move vertically parallel to their axes traversing the plate 36 which serves to I guide them.

The rods 51 support a crown 53 which itaaoaeea self bears four pairs of horizontal arms 54, Which arms are parallel in pairs. These four pairs of arms are, moreover, displaced by 90 the one set with regard to the others.

' These arms act as the support of the clips 59, the central elbow part 60 of which per-- mits of the passage of another cross piece 61 perpendicular to the preceding; at the two ends of each of these cross bars there are fixed pressers (shown at 62) combined with suitable springs (such as .63) by the interposition of the rods 64 which also serve to guide them.

The plate 36 possesses further fourpairs of rods 65 parallel to the four pairs of horizontal arms 54 already mentioned, and the axes of these rods are situated in the same vertical planes, the free spaces 66 between these rods forming molds for the folding of the wrappers.

In the vertical plane passing diametrically through the axis of the shaft 38, the receiving and transporting mechanism in question comprises also a special mechanism for raising the tablet covered with its internal wrapper so as to release it from the folding mold 66 and to permit the clips 55 to seize it again. bar 67 mounted upon a rod 68 which is movable vertically, and can traverse the bottom of each of the folding molds 66: the rod 68 is guided in a vertical support 69 and re ceives an alternatingunotion of ascent and descent by means of the rod 70 jointed upon" the rod 68 has a fork in which is mounted a pivoted catch 76, the heel of which 77 during the rising motion of the shaft in question comes in contact with a roller 78 mounted so as to be able to turn on a fixed axle on the frame of the machine. From this construction it results that the upper end 79 of the projection 76 pushes slightly from the left toward the right the tablet as shown in Figs. 4: and 5 so as to bring it between the clips into a suitable position for it to be eventually covered with the outer wrapper.

In order to insure the suitable opening of the clips so that the tablet can pass between their jaws, the rods which support them are This mechanism consists of theprovided with eccentric cams 80 coiiperating with an inclined plane 81 carried by the frame of the machine, so as to cause these clips to open against the action of their clos ing springs at the moment when the tablet is passed between their jaws.

The mechanism for folding the wrappers indicated by the reference letters G and H in the diagram shown in Fig. 1 are alike and are constructed in the following manner (see Figs. 6 and 7). Let us assume that we are dealing with the mechanism G which is devised for. the folding of the internal wrapper. The shaft I of this mechanism has the necessary cams for the operating of the lateral clips which fold-over the large sides of the wrapper, and of the end pliers which fold over the small sides or ends of the same. The lateral clips 82 (Fig. 6) are mounted upon arms 83 which oscillate around fixed axles 84 and possess for this purpose little rollers 85 coiiperating with scribed hereinafter: The vertical clips 87 are mounted in a fixed manner upon a piece 89 which is supported by a rod 90, which rod receives an alternating up and down motion in a suitable guide. To efiect this a little rod 91 is articulated at 92 upon the aforesaid rod on the one hand and on the other hand it is articulated to a lever 93 oscillating about a fixed axle 94 under the action of a roller 95. which cooperates with a cam 96 keyed upon the shaft I'above mentioned. Hooks 88 devised to turn down horizontally the ends of the wrappers are a part 99, which is in one piece with a cylindrical hollow sleeve 100 which sleeve can be adjusted vertically in a suitable guide piece 101. The motion of the part 100 is imparted to it by means of the little rod 102, articulated on the lever 103, which can oscillate'upon the axle 104, which is mounted rigidly upon the frame of the machine and possesses a roller 105 cooperating with a cam 106 keyed upon the driving shaft I above mentioned.

The levers 97 are shaped so as to each prev sent a slope 107 adapted to coiiperate at the required moments, with a roller 108 mounted on the part/89' which carries the vertical mounted upon levers '97 articulated at 98 on i clips 87, which arrangement causes the descent of the bar 90 to effect the closing of the hooks 88. The cylindrical sleeve 100 has moreover a groove 92, which admits of the relative motions of the parts 89 and 99 with regard to one another, and the correct operating of the vertical clips and the hooks devised for folding down the ends of the wrapers.

The cutter and the counter-cutter, ar' ranged to cut at the required moments the papers of which the wrapper is formed, are shown at 109 and 110 in Fig. 7 of the drawings.

Under these constructional conditions the general operation of the machine in question is the following: The unwrapped tablets T are first carried by the distributer D between the clips of the receiver and trans porter C, which are arranged at this moment facing the distributor in question; Fig. 8 of the accompanying drawing shows in full lines the respective positions which the tablet T then occupies, the clips 55 and the presser 62. The receiving and transporting mechanism C effects a turn of 90 degrees during which the clips and the tablet which they carry descend as shown in dot-and-dash lines in Fig. 8. The tablet T then takes its place in the mold 66 formed by two rules 65, and the clips open as shown in Fig. 9, which figure shows also the position taken at this moment by the sheet of paper 0 which is to be formed into the wrapper of the tablet T; the presser '62 (Fig. 10) then folds the wrapper 6 around the tablet T in the mold 66 and this presser then rises (Fig. 11), and the side clip on the right hand makes its motion followed by that of the side clip on the left hand (Fig. 12). The folding in of the ends of the wrap per of the tablet is then undertaken in the following manner: The vertical clips 87 first rise and then fol'd over the tablet T. the paper e (Fig. 13). These clips 87 then descend again in order to take the position shown in Fig. 14, while the hooks 88 effect the turning down and the folding over of the ends of the wrapper. The presser 62 then sinks and insures the perfect closure of the envelop on the tablet while the vertical clips 87 and the folding hooks 88 remove themselves and move down so as to take finally the position shown in Fig. 15.

Figs. 7, 16 and 17 show, moreover, the various positions occupied successively by the clips 87 and the hooks 88 during one of the periods of the action of the machine. The tablet covered with its first wrapper or internal envelop by the mechanism G is then transport d by means of the clips of the mechanism C, so as to be delivered to the mechanism H which effects its covering with the outer wrapper. This covering having been effected, the mechanism C then removes the tablet entirely covered, S, to the traveling track R upon which the said tablet is moved by means of the finger 28 articulated to the end of the distributing table 1 during the return movement of the said table. The

moacea said traveling track then transports the tablet completely covered with its two wrappers, and carries it to the receptacle.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed,I declare that what I claim is:

1. In a machine for wrapping tablets and the like, the combination of an intermittently rotated transporter comprising arms having tablet receiving recesses over which recesses wrappers are placed; a distributing mechanism for moving tablets to the recesses; pushers carried by the transporter for pushing. the tablets into the. recesses; lateral clips for folding down the sides of the wrappers upon the tablet; and means for folding the ends of the wrappers.

2. In a machine for wrapping tablets and the like, the combination of an intermittently rotated transporter comprising arms having tablet receiving recesses over which recesses wrappers are placed; a distributing mechanism for moving tablets to the recesses; pushers carried by the transporter for pushing the tablets mto the recesses; lateral clips for folding down the sides of the wrappers upon the tablet; end clips for raising the ends of the wrappers; and hooks for folding down said ends.

3. In a machine for wrapping tablets and the like, the combination of an intermittently rotated X-shaped transporter and receiver comprising arms having recesses; a distributing mechanism for presenting tablets to the receiver; means for applying inner wrappers to the tablets while in said recesses; a second means for applying wrappers; means for raising the wrapped tablets from the recesses; and clips for lifting tablets from said distributing mechanism and dropping them in the recesses to be wrapped and from said raising means and dropping them into the recesses again for applying the second wrapper.

4:. In a machine for wrapping tablets and the like, the combination of an intermittently rotated X-shaped transporter and receiver comprising arms having recesses; a distributing mechanism for presenting tablets to the receiver; means for applying inner wrappers to the tablets while in said recesses; a second means for applying wrappers; means for raising the wrapped tablets from the recesses; clips for lifting tablets from said distributing mechanism and dropping them in the recesses to be wrapped and from said raising means and dropping them into the recesses again for applying the second wrapper; a traveling rack for carrying away the wrapped tablets; and means for pushing the wrapped tablets from the recesses to said rack.

5. In a machine for wrapping tablets and the like, the combination of an intermittently rotated transporter comprising arms having tablet receiving recesses over which recesses wrappers are placed; a distributing mechanism for moving said tablets to the recesses; clips carried by said transporter for seizing the tablets from the distributing mechanism and depositing them over the reover on the tablet; and additional meansfor folding the ends and sides of a second wrapper over on the tablet.

7. In a machine for wrapping tablets and the like, the combination of an intermittently rotated transporter comprising arms having tablet receiving recesses over which recesses wrappers'are placed; a distributing mechanism for moving said tablets to the recesses; clips carried by said transporter for seizing the tablets from the distributing cesses and the wrapper t ereon;means for folding the'ends and sides of the wrapper over on the tablet; raising means for raising a the wrapped tablets from the recesses; means for causing said clips to seize the'raised tablets and release them after a second wrap er has been inserted thereunder; and a ditional means for folding the ends and sides ofa second wrapper over on the tablet.

mechanism and depositingl them over the re- 8. In a machine for wrapping tablets and.

the like, the combination of an intermittently rotated transporter comprising arms having tablet receiving recesses over which recesses wrappers are placed; a distributing folding the ends and sides of a second wrapper over on the tablet; a track for carrying away the wrapped tablets; and means for pushing the wrapped tablets onto the track.

10. In a machine for wrapping tablets and the like, the combination of an intermittently rotating combined transporter and receiver comprising arms having receiving re-- cesses 1n the ends thereof; means for presenting covering material over said recesses; a four motion distributing mechanism adapted to carry tablets toward said transporter; clips adapted to seize tablets presented by the distributer and deposit them on said covering material and over'said recesses; pushers for pressing the tablets into the recesses; lateral clips for folding down the long sides of the wrapper upon the tablets; vertically movable end clips for raising the ends of the wrapper; hooks adapted to fold down said ends; a traveling track for carrying away the wrapped tablets; and means carried'by said distributing means for pushing the wrapped tablets onto said track.

11. In a machine for wrapping tablets and the like, the combination of an intermittently rotating combined transporter and receiver comprising arms having recesses in the ends thereof over which recesses wrapping material is placed; a distributing mechanism for presenting tablets to the recesses; clips carried on said transporters for seizing. the presentedtablets and depositing them over said recesses and the wrapping material thereon; pushers for pressing the tablets into the recesses; lateral clips for folding down the long sides of the wrapper upon the tablet; vertically moving end clips for raising the ends of the wrappers; hooks for folding down said ends; raising means for raising the wrapped tablets from the recesses; means for causing said clips to hold the tablets in raisedposition and releasing 5 them after outside wrapping material has been inserted thereunder; means for pushing the tablets inplace and folding the sides and mechanism for moving said tablets to the re- 7 cesses; pushers carried by the transporter for pushing the tablets into the recesses; lateral clips for folding down the sides of the wrappers upon theta'blet; end clips for raising the ends of the wrappers; hooks for folding down said ends; and additional means for pushing the tabletin place and foldmg the sides and ends thereover.

ends of the wrapper thereover; a traveling track forcarrying away the wrapped tablets; and means for pushing the completely wrapped tablets upon the track.

12. In a machine for wrapping tablets and the like, the'combination of an intermittently rotated transporter comprising arms having tablet receiving recesses over which 9. In a machine for wrapping tablets and the like, the combination of an intermittently rotated transporter comprising arms having'tablet receiving recesses over which recesses wrappers are placed; means for folding the ends and sides of the wrapper over on the tablet; and dditional means for w recesses wrappers are placed; a distributing cesses; clips carried by said transporter for seizing the tablets from the distributing mechanism and depositing them over the recesses and the wrapper thereon; pushers carried by the transporter for pushing the tablets into the recesses; lateral clips for folding down the sides of the wrappers upon mechanism for moving tablets to the rea the tablet; end clips for raising the ends of the Wrappers; hooks for folding down said ends; raising means for raising the wrapped tablets from the recesses; means for causing said clips to seize the raised tablets and release them after a second wrapper has been inserted thereunder; means'for pushing the tablet in place and folding the sides and ends-therepver; a track for carryingaway the wrapped tablets; and means for pushing 10 the wrapped tablets onto the track. In testimony whereof I have signed my name to this specification in the presence of 

